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参数资料
| 型号： | LT1722 |
| 厂商： | Linear Technology Corporation |
| 英文描述： | Single, Dual, Quad 200MHz Low Noise Precision Op Amps |
| 中文描述： | 单，双，四200MHz的低噪声精密运算放大器 |
| 文件页数： | 13/16页 |
| 文件大小： | 326K |
| 代理商： | LT1722 |
LT1722/LT1723/LT1724
13
172234fa
Power dissipation is composed of two parts. The first is
due to the quiescent supply current and the second is due
to on-chip dissipation caused by the load current.
Worst-case instantaneous power dissipation for a given
resistive load in one amplifier occurs at the maximum
supply current and when the output voltage is at half of
either supply voltage (or the maximum swing if less than
half supply voltage).
Therefore P
D(MAX)
in one amplifier is:
P
D(MAX)
= (V
+
– V
–
)(I
S(MAX)
) + (V
+
/2)
2
/R
L
or
P
D(MAX)
= (V
+
– V
–
)(I
S(MAX)
) +
(V
+
– V
O(MAX)
)(V
O(MAX)
/R
L
)
Example. Worst-case conditions are: both op amps in the
LT1723IS8 are at T
A
= 85
°
C, V
S
=
±
5V, R
L
= 150
,
V
OUT
= 2.5V.
P
D(MAX)
= 2 [(10V)(5.95mA) + (2.5V)
2
/150
] = 203mW
T
J(MAX)
= 85
°
C + (203mW)(190
°
C/W) = 124
°
C
which is less than the absolute maximum rating at 150
°
C.
APPLICATIU
W
U
U
Circuit Operation
The
LT1722/LT1723/LT1724
circuit topology is a voltage
feedback amplifier. The operation of the circuit can be
understood by referring to the Simplified Schematic. The
first stage is a folded cascode formed by the transistors
Q1 through Q4. A degeneration resistor, R, is used in the
input stage. The current mirror Q5, Q6 is bootstrapped by
Q7. The capacitor, C, assures the bandwidth and the slew
rate performance. The output stage is formed by comple-
mentary emitter followers, Q8 through Q11. The diodes
D1 and D2 protect against input reversed biasing. The
remaining part of the circuit assures optimum voltage and
current biases for all stages.
Low noise, reduced current supply, high speed and DC
accurate parameters are distinctive features of the
LT1722/
LT1723/LT1724
.
SIW
W
Q2
+IN
Q1
D1
D2
R
–IN
R2
Q6
Q7
Q9
Q10
V
S+
V
S–
OUT
1723 SS
Q11
Q8
Q4
C
V
BIAS
I
3
I
4
I
5
I
2
I
1
R1
Q5
Q3
相关PDF资料 |
PDF描述 |
|---|---|
| LT1723CMS8 | Single, Dual, Quad 200MHz Low Noise Precision Op Amps |
| LT1723CS8 | Single, Dual, Quad 200MHz Low Noise Precision Op Amps |
| LT1723IMS8 | Single, Dual, Quad 200MHz Low Noise Precision Op Amps |
| LT1723IS8 | Single, Dual, Quad 200MHz Low Noise Precision Op Amps |
| LT1724CS | Single, Dual, Quad 200MHz Low Noise Precision Op Amps |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1722CS5 | 制造商:Linear Technology 功能描述:OP Amp Single GP ±6.3V/12.6V 5-Pin TSOT-23 |
| LT1722CS5#PBF | 制造商:Linear Technology 功能描述:OP Amp Single GP 制造商:Linear Technology 功能描述:SC-Amps/Industrial Cut Tape 2 制造商:Linear Technology 功能描述:SC-Amps/Industrial, Cut Tape 200MHz Low Noise Precision OP Amp |
| LT1722CS5#TR | 功能描述:IC OPAMP PREC 200MHZ TSOT-23-5 RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:160 系列:- 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:10 V/µs 增益带宽积:9MHz -3db带宽:- 电流 - 输入偏压:1pA 电压 - 输入偏移:250µV 电流 - 电源:730µA 电流 - 输出 / 通道:28mA 电压 - 电源，单路/双路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:管件 |
| LT1722CS5#TRM | 功能描述:IC OPAMP PREC 200MHZ TSOT-23-5 RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:- 放大器类型:J-FET 电路数:2 输出类型:- 转换速率:13 V/µs 增益带宽积:3MHz -3db带宽:- 电流 - 输入偏压:65pA 电压 - 输入偏移:3000µV 电流 - 电源:1.4mA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作温度:-40°C ~ 85°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-PDIP 包装:管件 |
| LT1722CS5#TRMPBF | 功能描述:IC OPAMP PREC 200MHZ TSOT-23-5 RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 产品培训模块:Differential Circuit Design Techniques for Communication Applications 标准包装:1 系列:- 放大器类型:RF/IF 差分 电路数:1 输出类型:差分 转换速率:9800 V/µs 增益带宽积:- -3db带宽:2.9GHz 电流 - 输入偏压:3µA 电压 - 输入偏移:- 电流 - 电源:40mA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-VQFN 裸露焊盘，CSP 供应商设备封装:16-LFCSP-VQ 包装:剪切带 (CT) 产品目录页面:551 (CN2011-ZH PDF) 其它名称:ADL5561ACPZ-R7CT |
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